Borough of Princeton Weather Forecast

    • 48
    • 49

    Rain Showers Likely

    • 40
    • 64

    Slight Chance Rain Showers

    • 46
    • 69

    Mostly Sunny

    • 51
    • 74

    Partly Sunny

Today 7 Mar Mercer

Cloudy. A chance of rain in the morning. Areas of fog in the Morning, then patchy fog in the afternoon. Highs in the lower 50s. South Winds around 5 Mph. Chance of rain 40 percent.

Tonight 7 Mar Mercer

Cloudy with a 20 percent chance of rain. Patchy fog. Near steady temperature in the upper 30s. Light and variable Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Borough of Princeton Temperature Statistics

March Temperature

Trenton, Mercer County Airport (9.3 miles)

  • Lowest 2 March, 2026

    21 °F

  • Average March

    34.9 °F

  • Highest 4 March, 2026

    46 °F

Climate (2021–Present)

Trenton, Mercer County Airport (9.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    64.3 °F
Get WillyWeather+ to remove ads